diff -urN openvpn-2.5.0.org/src/plugins/auth-pam/auth-pam.c openvpn-2.5.0/src/plugins/auth-pam/auth-pam.c
--- openvpn-2.5.0.org/src/plugins/auth-pam/auth-pam.c	2020-10-28 08:25:23.000000000 +0100
+++ openvpn-2.5.0/src/plugins/auth-pam/auth-pam.c	2020-11-04 08:10:17.559124764 +0100
@@ -894,7 +894,7 @@
     char ac_file_name[PATH_MAX];
     int command;
 #ifdef USE_PAM_DLOPEN
-    static const char pam_so[] = "libpam.so";
+    static const char pam_so[] = "libpam.so.0";
 #endif
 
     /*